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Finding the Fourth Proportional to 557,430.40, 769,573.13 and 366,997.38

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Solution

The fourth proportional to 557,430.40, 769,573.13 and 366,997.38 is: 506,666.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,430.40 : 769,573.13 = 366,997.38 : x
  2. Step 2: Convert to fraction form
    557,430.40/769,573.13 = 366,997.38/x
  3. Step 3: Cross multiply
    557,430.40x = 769,573.13 × 366,997.38
  4. Step 4: Simplify right side
    557,430.40x = 282,431,322,428.40
  5. Step 5: Solve for x
    x = 282,431,322,428.40/557,430.40
  6. Step 6: Final answer
    x = 506,666.52

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.